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I know it looks like we have fun on this show, but we spend weeks and sometimes months planning how to do our mitts safely

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So please

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Don't try this at home

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On this episode of mythmusters

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Adam and Jamie have a blast

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Testing the cinematic cliche that you can dive underwater building your body and

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Your mind to survive an above water boom

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Yeah, meanwhile Carrie Grant and Tori

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Let their trigger fingers do the talk science gets more fun when I get a bigger gun

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To find out if you can bulletproof a car

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I'm having an AT moment

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With nothing but

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I

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Don't savage

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And Jamie Heinemann we're gonna have an adventure between them more than 30 years of special effects experience

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Joining them

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Grant immahara. It's lethal people Carrie Byron, but at least we still have good chemistry and Tori Bellachie

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Crashes and fire this is awesome. They don't just tell the myths they put them to the test

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So what's the story?

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Well, I've been thinking wouldn't it be cool if we were action heroes in our own movie and some bad guys were trying to blow

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Us up, but we managed to escape

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Is that a harp I'm hearing shush here comes a clip

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It's a climactic cinema cliche

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our heroes are trapped on a boat and

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A bomb's about to explode

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To escape certain death they take the punch

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And after a huge kaboom resurface completely unharmed

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So you're wondering whether diving underwater could help protect you from an injury in the case of an explosion

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exactly

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Sounds like a blast a

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Shockwave is created when the rapidly expanding gases inside an explosion

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Travel faster than the speed of sound and it's this shock front that causes a wave of destruction

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But can you avoid imminent annihilation by leaping into water?

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Well to find out the mythbusters are hunkering in the bunker for a proof of concept

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I put together this bifurcated tank with a plan to fill this half with water and that half with dry ice fog or

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Air that we can visualize we're gonna put a firecracker right up here in the center

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Explode it and hopefully we'll be able to view that same shockwave in the two different media and see if there's a difference on the high speed camera

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And for that Jamie's turn to string theory these will hang in the water and move if a shockwave hits

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With the tanks filled and a firecracker primed

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Standby for mayhem in miniature

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Everything's perfect

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I saw the water move. Let's see how it looked on the high speed

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But a closer look at the high speed reveals not much actually

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I think we need something bigger than this firecracker. I think we do

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Officer Smith, I think we need something a little bigger. Can you hook us up?

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The M80

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That ought to do it

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With shockwaves apparently size matters cue the M80

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Come on, baby

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Oh

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That was loud and interestingly I saw the fog move but not the water. Well, let's check it out on high speed. I

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Didn't see much because you I'm seeing the smoke move around

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See that divot there. Remember, they're looking for proof that a shockwave

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differently in water to air, but the shockwaves aren't showing up on the close-up

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So for a bigger boom, it's back to officer Smith the M1000

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More but a hundred times more

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Hopefully that should tie up Janie's loose threads. Oh, it's getting close

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There comes

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Whoa, I think we're going to have seen something I think so. Oh did that blow the door open?

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There's water on the ceiling that's always a good sign

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But once again the high-speed replay has the same problem, there's no clear shot of the shockwave

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It's reacting but they seem to be reacting differently somehow

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Well, they're not telling us what we want to see

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I think we're gonna have to concoct a different test if we're gonna learn

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Whether or not there's a difference between a shockwave in the water and a shockwave in the air. I think you're right. We're done here, okay?

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Every day is the 4th of July

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Next up the team calls for directory assistance

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So phone book freedom, what is this one all about?

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Okay, so this myth comes from a spy TV show and they say that if you're desperate and penniless

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There is an easy way to make your vehicle bulletproof using phone books

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That's right

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If you put the phone books in the panels of your car you can actually stop non armor piercing rounds easily

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Okay, I can see how that could work the bullet hits the car door

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It's the metal first absorbs most of the energy in the rest gets absorbed by the phone books

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It could work. Wow sounds like they really phoned this one in

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Well according to this small screen

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Spice scene you can bulletproof by numbers just one layer of phone books inside the doors and it's a free ride to safety

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Okay, this one should be pretty simple. We get a bunch of car doors a bunch of phone books shoot out and see if they're bulletproof

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Yeah, that's pretty much it but just to be thorough

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We should fire a bunch of different types of guns because in the real world you never know what you're gonna be up against

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All right. Well, I think our first trip should be the junkyard and we'll get some doors

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They'll test this myth by the book so first things first they need something to stuff

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Okay, my way is not working

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So we got four doors off of this car

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That's pretty much all we need to take down to the range. They're already hollowed out

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So we can just stick the phone books in there. This should be a piece of cake

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Back at the shop the cake comes together in what has to be the most low-tech build in Mythbusters history

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Wait round hole square peg

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This doesn't seem to fit and with one layer of phone books wedged inside the doors

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They head for the shooting range

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Guys ready to start shooting to hit the books for this experiment

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We have car doors lined with a single layer of phone books

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Which according to the myth is all it took to stop a bullet and on this side we've painted a target

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Then we'll set up the doors at the end of the firing range and we'll start shooting out with a variety of guns from 30 feet away

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We'll be firing a 9 millimeter handgun a

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357 magnum

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45 caliber finally

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12-gauge shotgun

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Right and before they take a shot at the myth how about a prediction?

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We're starting out with the 9 millimeter handgun

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I'm thinking two and a half inches of phone book eighth of an inch on the outside of the car door of sheet metal

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Yeah, we could be bulletproof right now. All right. This is the 9 millimeter the smallest round in our arsenal

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Here we go

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There's an entry hole, but no exit for the 9 millimeter

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Meaning that's one for the books

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But can they get the same result with gun number two firing at

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1,450 feet per second. It's the 357 magnum

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Nice shot text a clean strike, but what's the verdict? No way

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So it didn't make it all the way through that means the phone book actually made this bullet proof

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The phone books blocked the 9 millimeter they blocked the 357 magnum, but I've got one of these

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45 caliber if this doesn't make it through I've been really surprised going hot

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The bullet punched through the front panel

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But the phone book

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That's astounding this myth is looking really good

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That's three zero to the phone books the handgun rounds didn't penetrate

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But next it's the toughest round so far the 12 gauge shotguns deer slug

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Nice

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Tori's aim is dead on resulting in the first phone book casualty

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So the 12 gauge deer slug went right through the door it went through the front panel the steel

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Reinforcement the phone book and the inside panel now that is an intense shot

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Intense is right with the shotgun firing a 385 grain slug at

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1,850 feet per second the phone book at last met its match

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But now it's gonna meet its maker cuz grads packing an M14 assault rifle

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Okay, you guys ready

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Well, no surprise that the bull went right through the door

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I think that didn't even slow down

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More like a tour through the door with a muzzle velocity a thousand feet a second faster than the shotgun

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It's no surprise that this round also sailed clean through but where does that leave the myth?

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So this myth is about non-hour piercing rounds being stopped by car doors filled with phone books like these

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This is true the 9 millimeter the 357 magnum and the 45 caliber all handguns

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Once you get anything larger than a handgun the bullets go right through so this myth could be busted right here right now

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Or is it coming up next in the dive to survive?

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Good morning the myth busters make boom for improvement

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In this movie myth our heroes take cover underwater to escape injury from a bomb

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But could taking a dive save your life

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It's time to up the end at the myth busters home away from home a good day to blow some crap up, huh?

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You bet

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Blow crap up they will but this time instead of trying to visualize the shockwave

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They'll measure it this plumbing equipment here is a matrix for holding together our key piece of detection equipment in this myth

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And that is this an oscico rupture disc basically a calibrated piece of aluminum foil when this is properly held

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In the plumbing and it finds itself in an environment over 13 pounds per square inch of pressure it will

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Burst telling you that if you were standing where this disc was you'd encounter physical injury

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And our regular explosives expert JD has the C4 to test them

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That may blow up but it

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JD it's not very pretty

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Better make a one like the cartoons. Yeah

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Have no doubt in my mind you're gonna get that roadrunner this time

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Then it's over to Adam to explain exactly how this all fits together

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We're going to ignite this calibrated block of C4 and it will generate a pressure wave

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A quite a dangerous pressure wave that will burst some but not all of the burst discs in this line

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Let's say it bursts all of them up to here and none after that that tells me that this point is the farthest point at which

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That explosive generates a dangerous injurious amount of pressure. Are you ready?

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All right JD go ahead and light it

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This is calculating

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injurious distance of C4

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We're gonna feel this one. Yeah, I think so

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Wow that was a rush. No wake you up in the morning. Let's go check them out

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Great one act me explosion down and the mythbusters have the dangerous distance data they need

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All the way up to here

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Ten feet is it then that's our danger zone our danger zone. All right ten feet now. It's time for phase two

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What we want to know is how well an explosion that occurs in the air can make the transition

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Into the water and how potentially dangerous that it would be and to find out the guys rejig their rig

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So that for blast to it can simultaneously monitor the effect of the shockwave in air and in water

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So what's this test about? It's actually pretty simple one burst disc in air

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One burst disc in water if there's any truth to this myth what we should see when we set up that explosive is that this first

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Disc will blow and this one will not

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Okay, take it up

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Well, it's time to put that theory to the test with the same amount of C4

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10 feet away from the two pressure discs go for it JV light it up

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There it goes I don't know about you, but I'm predicting that there will be a difference. I think so

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I'm just thinking about the shockwave. That's a this is invigorating

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Oh

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Good morning, yep, I should do it now to find out how the burst discs compare

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To blown burst discs

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To intact burst discs

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Nice, that's what I call a result there might be something to this after all at a look at the high speed confirms Jamie's suspicions

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This high speed shot tells the whole story the rupture disc in the open air is burst immediately and

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Cleaned through as opposed to the one in the water which is affected

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But only with a ripple and an instant later now what this tells us is that the water is actually

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Diminishing the shockwave it's slowing it down and making it much less powerful

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It's looking good for the myth the water does appear to dampen the shockwave and reduce the risk of injury

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But they won't know for sure until they go full scale. So based on this test

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I figure we should take tanks of water out whenever we do tests with explosives, you know, get into the tanks

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That's a great idea. I know that one was cool

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And if you want to see what I'm talking about go to discovery comm slash myth busters and check it out

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When you're making a quick getaway from gun totem bad guys a little extra protection goes a long way

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But so far in this budget bullet proofing saga

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The phone numbers just don't add up

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The myth is that a single layer of phone books when added to a car door will make an impenetrable barrier to bullets

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This is busted both our deer slug and our m14 round went clean through

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And though that may be true for a single layer of phone books

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How many phone books deep are we gonna have to get to make our car bulletproof for the high-powered ammunition?

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So we're gonna carry on it's obvious that we need more phone books

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So what we're gonna do is we're gonna take the same doors stuff for the phone book and add more phone books tend to be exact

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And see if that's enough to make our cars bulletproof against these higher powered weapons

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The mythical one layer of phone books is busted, but by how much?

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Okay, this is deer slug into 10 phone books behind the car door

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I

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Shack once again the slug blew through the door phone book combo

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But how many more books did it take to stop it just one into the auto section?

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So it looks like two phone books is all you would need to stop a deer slug not bad

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But there's still that top gun to go. I think this is gonna cut right through

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Well hold the phone because it looks like Tori may have been wrong

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There it is still warm and we got

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Almost to the back side of the first phone book plus the one nestled inside the door

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That's still only two phone books to stop an M14 bullet. I thought it would easily have gone through half that stack

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I thought it was gonna go through the whole stack

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I mean that's it two layers of phone books and you can turn your car into a bulletproof vehicle

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After a hard day shooting the myth is busted

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But only just and that's giving the mythbusters something to think about

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So the idea that you can bulletproof a car door with one phone book

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Totally busted. Yes, but I don't think we can leave it there. Go on

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I think since we were able to stop all the bullets using two phone books in the doors

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This whole idea of a bulletproof car using phone books is possible. I say we try to build one a whole car. Yeah

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Completely bulletproof. Yep. I love it. Okay, but I see there are two problems

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First we've established that it takes two phone books to armor a door. What about the windows?

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Second we may need so many phone books that the car is too heavy to drive

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So we find out how many phone books it takes to bulletproof a window

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We do a little math and we find out if you load this thing up with phone books

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Well, it's still drive. All right, and then we build a bulletproof car

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Touries all fired up, but before any overhauling they're looking into those windows

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Just how many phone books will it take to make them stop a slug to find out carry and Tori position

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10 phone books behind the glass and take aim with the mighty M14

224
00:19:34,960 --> 00:19:37,760
Three two one

225
00:19:39,720 --> 00:19:44,500
It looks like it went through three phone books, let's go take a look. Oh, yeah

226
00:19:45,060 --> 00:19:47,060
Three phone books is right

227
00:19:49,940 --> 00:19:54,820
But there's a problem three phone books deep inside the car is

228
00:19:55,340 --> 00:19:57,340
Pretty much gonna crowd the driver out

229
00:19:57,340 --> 00:20:02,960
Right, there's not much point in bulletproofing if the driver won't fit so to give him some room

230
00:20:02,960 --> 00:20:07,780
They try a sandwich formation two on the outside and one on the inside

231
00:20:09,860 --> 00:20:12,460
In three two one

232
00:20:14,060 --> 00:20:17,940
But unfortunately it blasted out the backside

233
00:20:19,020 --> 00:20:22,820
The bullet makes a meal of the sandwich, but that's crazy

234
00:20:22,820 --> 00:20:27,180
I mean, it's the same amount of material that it's passing through its three phone books and a pane of glass

235
00:20:28,040 --> 00:20:31,640
Well, I guess that means that when the bullet hits the window

236
00:20:31,640 --> 00:20:37,320
Which is a hard surface that deforms and then just gets absorbed into the back three and that's key

237
00:20:37,520 --> 00:20:43,760
When the bullet hits a rigid surface like metal or glass first it expands a large part of its energy

238
00:20:44,040 --> 00:20:47,040
But when the bullet hits the flexible phone books first

239
00:20:47,480 --> 00:20:51,840
Less energy is expended and it can continue along its trajectory

240
00:20:52,740 --> 00:20:58,760
So what they need to know now is how many phone books in front of the glass will stop the slug

241
00:21:00,260 --> 00:21:02,780
In three two one

242
00:21:04,340 --> 00:21:10,580
Did that go all the way through I sure hope not well actually the bullet made it through four and a half phone books

243
00:21:11,140 --> 00:21:13,900
More than double the phone books needed for the doors

244
00:21:14,300 --> 00:21:20,260
Do you know how heavy it's gonna be to cover every single window surface with five phone books?

245
00:21:20,320 --> 00:21:23,700
That's better than ten phone books. Okay, bright side boy

246
00:21:26,360 --> 00:21:28,720
After the break Adam and Jamie find out

247
00:21:30,400 --> 00:21:36,920
Wow that was a lot if it really is better down where it's wet

248
00:21:44,800 --> 00:21:47,800
With a bomb about to blow and no escape

249
00:21:48,740 --> 00:21:54,780
With taking the plunge protect you from the blast Adam and Jamie are putting that to the test

250
00:21:57,340 --> 00:21:58,940
Good morning

251
00:21:58,940 --> 00:22:04,460
We've just seen that there does appear to be an advantage to being submerged when a bomb goes off the rupture disc

252
00:22:04,460 --> 00:22:08,700
That was under the water was intact the one that was in the air was ruptured

253
00:22:09,180 --> 00:22:15,860
Obviously we used a small tank though and the scale of the tank and the nature of the tank could have affected our results

254
00:22:15,880 --> 00:22:21,480
So they're not definitive what we need to do now is go full-scale in an open body of water

255
00:22:21,480 --> 00:22:27,120
And we're creating an aquatic rig that will give us the measurements we need both above and below water

256
00:22:28,280 --> 00:22:31,320
This is a complicated rig with lots of parts

257
00:22:35,120 --> 00:22:39,080
Some that float and some that don't yeah

258
00:22:40,800 --> 00:22:44,480
I know it doesn't look like much but trust me once this stuff all goes together

259
00:22:44,500 --> 00:22:48,540
You will see that there is a method to the madness you don't have to take my word for it

260
00:22:48,540 --> 00:22:51,220
Just probably one more commercial break and you'll get to see it all

261
00:22:51,860 --> 00:22:54,860
Well, actually you don't even have to wait that long

262
00:22:56,380 --> 00:22:59,320
Let's go scuba diving and blowing some stuff up all right

263
00:23:00,380 --> 00:23:05,140
With the rig flat pack it's off to location. It's a lovely lake isn't it in fact?

264
00:23:05,140 --> 00:23:11,220
It's not actually a lake. It's a man-made pit pit 232 to be exact here at Rancho Arroyo Seco

265
00:23:11,600 --> 00:23:15,920
And the fact that it has no wildlife at all living in it makes it ideal for what?

266
00:23:16,760 --> 00:23:18,760
Yes blowing stuff up

267
00:23:19,560 --> 00:23:21,560
It's gonna be a good day

268
00:23:22,160 --> 00:23:28,640
But before they start blowing anything up they've got to get their rig in position and make sure it floats

269
00:23:29,240 --> 00:23:31,240
It's a dock

270
00:23:31,600 --> 00:23:34,160
The other one will be just peachy

271
00:23:34,920 --> 00:23:39,960
So how are we gonna test the myth that jumping in the water can protect you from an explosion in full-scale?

272
00:23:40,740 --> 00:23:43,340
Well, it all starts with a body of water and

273
00:23:44,260 --> 00:23:49,940
Continues with this platform which soon will have various types of explosives placed right where I'm sitting

274
00:23:50,500 --> 00:23:58,260
For measurement, we're using Oseco rupture discs and we're mounting them in these things and they're calibrated for 13 psi

275
00:23:58,260 --> 00:24:00,260
Which is our threshold for human injury

276
00:24:01,180 --> 00:24:05,100
We'll be deploying our rupture disc masks at five

277
00:24:05,740 --> 00:24:06,780
ten

278
00:24:06,800 --> 00:24:09,600
Twenty and fifty feet away from the explosions

279
00:24:10,280 --> 00:24:12,280
We're gonna be mounting these things

280
00:24:13,040 --> 00:24:16,680
Like so on our floating mass at five feet above water

281
00:24:24,400 --> 00:24:28,720
And if the myth is true if jumping in the water really can protect you from an explosion

282
00:24:28,720 --> 00:24:35,800
We should find that one of our masks has its in-air disc burst, but the ones underwater intact

283
00:24:36,920 --> 00:24:43,040
And for an in-depth result they do three tests with 50 pounds of three different explosives

284
00:24:43,800 --> 00:24:44,940
starting with

285
00:24:44,940 --> 00:24:46,000
gasoline

286
00:24:46,000 --> 00:24:49,400
These are the buttons arm and fire when I push these

287
00:24:49,800 --> 00:24:53,200
50 pounds of gasoline on that tripod behind me are gonna go boom

288
00:24:53,520 --> 00:24:58,080
Will it demonstrate an improvement to being underwater supposed to above water? I don't know

289
00:24:59,400 --> 00:25:04,800
Well, there's only one way to find out you ready. I'm ready. I've had my coffee

290
00:25:05,580 --> 00:25:07,420
Good to blow

291
00:25:07,420 --> 00:25:12,740
With the gas bombing away on the surface of the lake Jamie utters those familiar words

292
00:25:13,700 --> 00:25:17,700
Fire in the hole fire in the hole fire in the hole

293
00:25:19,500 --> 00:25:23,900
And Adams on the button three two one

294
00:25:27,620 --> 00:25:29,700
That was a lot it was

295
00:25:30,080 --> 00:25:39,040
All of our little holders are still in place, but the platform is gone

296
00:25:41,080 --> 00:25:48,440
The pressure away from the gasoline may have destroyed the floating platform, but more importantly how did the burst discs fair?

297
00:25:50,360 --> 00:25:57,360
Above and below the water at 50 feet 20 feet and 10 feet. They're all intact no ruptures

298
00:25:59,840 --> 00:26:01,840
are intact

299
00:26:02,440 --> 00:26:09,120
At the five foot mast above water that perfect record is broken five feet away

300
00:26:11,560 --> 00:26:15,320
Clean through but underwater it's a different story

301
00:26:16,360 --> 00:26:19,280
The burst discs are totally intact

302
00:26:21,080 --> 00:26:23,360
Interesting I thought so

303
00:26:23,980 --> 00:26:28,620
It's looking good for the myth at five feet the above water disc burst

304
00:26:28,700 --> 00:26:33,700
But the ones below the surface remained intact the gasoline explosion

305
00:26:33,940 --> 00:26:38,200
Didn't really create much of pressure wave it created a nice big fireball

306
00:26:38,200 --> 00:26:44,020
And I have to say that if I was near one of those I'd want to get underwater because I wouldn't get burned

307
00:26:44,980 --> 00:26:51,220
Indeed, but one shockwave does not a result make so the myth busters aren't gonna leave it there

308
00:26:53,360 --> 00:26:59,060
Next on myth busters. Can you really bulletproof a car using phone books? Oh my god

309
00:27:03,460 --> 00:27:07,960
Don't try anything you see on the show at home. We're what you call experts

310
00:27:14,420 --> 00:27:17,980
The team has their data for the automobile phone book armor

311
00:27:18,200 --> 00:27:23,660
Two books behind a door and five in front of a window will pull it proof a car

312
00:27:25,360 --> 00:27:28,500
So they're about to throw the books at this

313
00:27:29,240 --> 00:27:35,500
Dude nice car. Thanks, but there's a problem. What well that car's carrying capacity is

314
00:27:35,940 --> 00:27:38,540
1,800 pounds now to totally bulletproof it

315
00:27:38,540 --> 00:27:42,600
We'd need over 900 phone books which weigh more than 4,000 pounds

316
00:27:42,860 --> 00:27:46,220
So in other words what you're saying is it would be so heavy wouldn't be able to move

317
00:27:46,940 --> 00:27:53,820
Exactly the maximum number of phone books we can use and still have the car be drivable is 400. Okay, well, it's not lost

318
00:27:53,820 --> 00:27:59,260
Let's just be strategic about this. Let's strip out all the extra weight and then just bulletproof to priority

319
00:27:59,260 --> 00:28:04,380
I mean, we'll do it around the driver or the engine block and maybe the passengers in the back could just duck

320
00:28:04,740 --> 00:28:06,980
All right, sounds like we got our work cut out for us

321
00:28:08,780 --> 00:28:11,220
Well for looking to save weight we can get rid of the seat

322
00:28:11,340 --> 00:28:17,420
Yeah, I should buy us some phone books clearly bulletproofing this car is all about how you throw your weight around

323
00:28:20,100 --> 00:28:25,180
So obviously you're not gonna bulletproof your car with phone books on the run so okay

324
00:28:25,180 --> 00:28:28,060
Maybe this is the scenario the three is a trap in a warehouse

325
00:28:28,140 --> 00:28:32,580
It's surrounded by crazy gunmen and there just happens to be a car and some phone books there

326
00:28:32,580 --> 00:28:40,180
So you bulletproof the car make your getaway to freedom and that getaway will be far too dangerous for a wheel wheel man

327
00:28:40,380 --> 00:28:44,780
So it's over to our C whiz grant now normally with the radio control system

328
00:28:44,780 --> 00:28:49,860
You have something called a servo, which is a small motor or talking about a full-size car

329
00:28:49,860 --> 00:28:54,420
That's potentially loaded with a lot of weight. This isn't gonna cut it

330
00:28:55,140 --> 00:29:02,260
That's why I have this I made my own servo out of this huge motor and this is gonna be what's steering our car

331
00:29:02,540 --> 00:29:07,700
And while Grant installs his remote control system thanks to the time-lapse camera

332
00:29:07,980 --> 00:29:15,180
Carrie and Tori are making like work of the phone book papering. I don't know about you guys, but I'm having an 18 moment

333
00:29:16,260 --> 00:29:20,080
With the car fully booked and the remote control complete the

334
00:29:20,300 --> 00:29:24,820
Aprilback rider is loaded onto the truck and they're off to a familiar location

335
00:29:28,220 --> 00:29:34,420
Back at the quarry I love this place exploding cars exploding train stations and of course

336
00:29:34,940 --> 00:29:40,860
Exploding cement mixers this place has seen it all well except this

337
00:29:42,020 --> 00:29:45,740
The world's first phone book armored car

338
00:29:47,060 --> 00:29:53,220
And first up they need to check Grant's remote control look how low it's riding in the front

339
00:29:53,660 --> 00:29:55,660
With an almighty

340
00:29:55,740 --> 00:30:01,980
400 phone books way into down the cars not exactly built for speed so how fast is our getaway car going?

341
00:30:02,860 --> 00:30:06,620
10 to 15 miles an hour so it's bulletproof, but you can catch it on a bicycle

342
00:30:07,060 --> 00:30:10,100
Hey, if it's bulletproof enough, it doesn't need to go any faster

343
00:30:10,780 --> 00:30:12,500
Grant's right

344
00:30:12,500 --> 00:30:17,420
But how are they going to know if it is bulletproof enough? Come on tree

345
00:30:20,020 --> 00:30:20,780
That's right

346
00:30:20,780 --> 00:30:27,300
We've got a whole inflatable family that we're gonna put in here and if any of these guys deflate we'll know that a bullet made it through

347
00:30:27,740 --> 00:30:29,660
ready

348
00:30:29,700 --> 00:30:36,100
Right and with our inflatable friend at the wheel and the passengers lying in the fully fortified footwells

349
00:30:36,340 --> 00:30:42,380
What's the plan? We are going to have our bulletproof vehicle armored with phone directories at that end of the quarry

350
00:30:42,380 --> 00:30:46,260
It's going to make a mad dash 200 yards in that direction to safety

351
00:30:46,260 --> 00:30:51,820
I'm gonna be up on that ridge right there with my M1 grand Tori right there with a shotgun. You ready?

352
00:30:52,940 --> 00:30:54,940
Grant you ready?

353
00:30:55,140 --> 00:30:59,460
Great it's time for science remember they could use only 400 of the

354
00:30:59,820 --> 00:31:03,300
900 phone books it would take to create a fully armored car

355
00:31:03,460 --> 00:31:09,860
So will their strategic stuffing succeed in protecting both the engine and the passengers

356
00:31:09,860 --> 00:31:11,860
Shooters ready

357
00:31:12,060 --> 00:31:13,620
Hit the gas

358
00:31:13,620 --> 00:31:17,700
Grant flicks a switch and the paperback rider lurches across the quarry

359
00:31:18,260 --> 00:31:26,700
Then it's locked stock and two smoking barrels as Carrie and Tori unload a barrage of bullets into the paper armor

360
00:31:28,500 --> 00:31:34,740
Until the phone book Jalopy makes it to safety gas off break off killing it

361
00:31:36,940 --> 00:31:43,340
I know I hit it, but I'm dying to see if I made it through that was so much fun. It was like a shooting gallery

362
00:31:44,260 --> 00:31:48,860
There's no doubt the bullets hit their mark, but did the passengers survive?

363
00:31:55,180 --> 00:32:00,180
We made this vehicle bulletproof with nothing but phone books wait, let's check the passengers

364
00:32:00,820 --> 00:32:02,420
one

365
00:32:02,420 --> 00:32:05,100
Chapman he's looking all right and two

366
00:32:06,820 --> 00:32:08,820
The whole family survived

367
00:32:09,380 --> 00:32:13,660
Against the shotgun in the m14 the phone book armor did its job

368
00:32:14,140 --> 00:32:20,100
So the car is in perfect working order and all the passengers are alive and accounted for at this point

369
00:32:20,100 --> 00:32:22,100
The myth is looking very good

370
00:32:23,260 --> 00:32:29,620
The guys are understandably psyched like swing dancing, but the firearm fun doesn't end here

371
00:32:30,180 --> 00:32:37,380
Next up the team comes out all guns blazing. All right. Watch out one kill. Let's do this in the bulletproof phone books finale

372
00:32:38,820 --> 00:32:40,820
I

373
00:32:47,780 --> 00:32:51,180
Blow up passengers may have survived the first chill

374
00:32:53,940 --> 00:32:57,820
But the myth busters aren't about to close the book on this one yet

375
00:32:58,500 --> 00:33:01,940
Now I think it's time. We take it up a notch. Oh really?

376
00:33:01,940 --> 00:33:05,820
Let's say these guys are real bad guys, and they have some serious weapons

377
00:33:06,420 --> 00:33:08,740
Science gets more fun when I get a bigger gun

378
00:33:09,860 --> 00:33:14,620
It certainly does and this time the bad guys will be packing some serious heat

379
00:33:15,020 --> 00:33:21,380
Carrie and I are gonna be using you in P40 and the m16 fully automatic now if it gets past those guns

380
00:33:21,380 --> 00:33:25,820
We're bringing out the big guns and just to make sure we get enough rounds into our vehicle

381
00:33:25,820 --> 00:33:30,780
We have a guest shooter deputy Eric from the Calaveras County SWAT team folks

382
00:33:31,140 --> 00:33:38,260
Welcome to the gun show with our phone book behemoth at the starting line and a trio of fully automatic weapons trained on it

383
00:33:38,660 --> 00:33:40,900
Grad calls the shots break is coming off

384
00:33:42,100 --> 00:33:47,260
Here goes the gas just like last time the car trundles into the line of fire

385
00:33:50,460 --> 00:33:53,960
The guns blaze and the phone book confetti flies

386
00:33:57,100 --> 00:34:00,340
Until it reaches the end of the gunshot gauntlet

387
00:34:01,740 --> 00:34:06,560
It's on the engine that was fun good shooting

388
00:34:07,300 --> 00:34:14,340
I say get the yellow tape. I don't think Trudy's making it out of this one. I wonder if a day look at how many hits we got

389
00:34:15,340 --> 00:34:20,020
The phone book armor is riddled with bullet holes, but what about those passengers?

390
00:34:21,340 --> 00:34:28,420
Hey, I see shredded paper. She's okay. Yeah, there's definitely confetti. I mean this is not necessarily bull proof

391
00:34:28,420 --> 00:34:30,420
But she's one lucky blow

392
00:34:31,020 --> 00:34:33,020
And she's not the only one

393
00:34:33,420 --> 00:34:42,260
Amazingly the other two passengers are also unharmed this vehicle had a small coolant link, but it's still running for all intents and purposes

394
00:34:42,620 --> 00:34:44,180
It's bulletproof

395
00:34:44,180 --> 00:34:48,220
But you know the next thing is likely to kill the car to test this myth

396
00:34:48,220 --> 00:34:52,900
We used a shotgun and in one grand and some machine guns and it was a fun little game of shoot them up

397
00:34:53,580 --> 00:34:56,180
Not quite adequate. So now we're moving on to

398
00:34:56,780 --> 00:35:04,740
The big guns we have a 50 cal we have a 416 Barrett and a 338 La Pua. This should be fun

399
00:35:05,780 --> 00:35:10,400
Fun could be an understatement. All right, one shot one kill. Let's do this

400
00:35:10,740 --> 00:35:13,900
Shooters ready ready ready. Here goes the gas

401
00:35:16,260 --> 00:35:18,880
Let the car carnage begin

402
00:35:19,060 --> 00:35:27,060
It's a rain of fire as the car is bombarded with bullet after bullet

403
00:35:29,720 --> 00:35:33,080
Until Carrie lines up a shot at the engine block and

404
00:35:37,040 --> 00:35:40,640
It's all over for the phone book escape escapade

405
00:35:41,520 --> 00:35:43,520
Oh

406
00:35:47,760 --> 00:35:51,040
Something stopped it. Oh, I think I know what stopped it

407
00:35:54,440 --> 00:35:56,440
Carrie took her shot

408
00:35:56,440 --> 00:35:59,320
I almost had a heart attack. I mean the whole ground shook

409
00:35:59,320 --> 00:36:06,840
There's this big cloud of dust and basically it was that shot that stopped the vehicle man. These weapons are incredible

410
00:36:07,720 --> 00:36:09,720
incredible and lethal

411
00:36:10,640 --> 00:36:12,640
Oh

412
00:36:15,920 --> 00:36:20,160
Didn't make it I don't think anybody in there made nobody made it

413
00:36:22,720 --> 00:36:28,100
There's no denying that the phone books bit the bullet but where does that leave the myth?

414
00:36:28,560 --> 00:36:31,720
Well, it's looking like no amount of phone books is gonna stop one of these rounds

415
00:36:31,880 --> 00:36:38,280
Yeah, but up to a 50 cal this phone book armor stuff just about everything. Well, this is a perfect progression of a story

416
00:36:38,320 --> 00:36:42,240
I mean with the first round of guns, we're bulletproof the second round of guns

417
00:36:42,240 --> 00:36:46,160
We're like a bullet resistant and with the final round of guns like

418
00:36:46,840 --> 00:36:48,840
like bullet absorbent

419
00:36:49,560 --> 00:36:51,560
All right, who's driving home shotgun

420
00:36:59,080 --> 00:37:03,560
Up next the dive to survive finale goes off like a bomb

421
00:37:08,760 --> 00:37:14,240
Jamie and Adam are having a blast

422
00:37:16,000 --> 00:37:20,220
The platform is gone to find out if a quick dip could save your life

423
00:37:20,760 --> 00:37:24,920
And now they're amping up for even more boom for their buck

424
00:37:25,680 --> 00:37:29,000
For this blast, we're gonna use a blasting agent called amp foe

425
00:37:29,000 --> 00:37:33,960
It's ammonium nitrate, which is basically fertilizer and diesel fuel now

426
00:37:34,000 --> 00:37:39,360
That's gonna create a pressure wave moving out from the blast at 4,000 feet per second

427
00:37:39,560 --> 00:37:42,440
That pressure wave is what it's gonna burst our discs

428
00:37:43,240 --> 00:37:51,080
That's the theory and with a new set of burst discs in place. They're ready for a big ampho bag. Everything's in it looks great

429
00:37:51,920 --> 00:37:59,320
But how will it compare to gasoline? It's definitely gonna burst the five in the ten foot burst discs in air. I

430
00:37:59,960 --> 00:38:02,120
Don't think it's gonna burst those in water

431
00:38:02,120 --> 00:38:06,840
I think this is gonna demonstrate a clear difference in the shockwave propagation in air as opposed to water

432
00:38:07,680 --> 00:38:11,740
Well, all is about to be revealed as Jamie takes the controls

433
00:38:12,440 --> 00:38:16,360
We're good to go. You're good to go. You are in control. All right then

434
00:38:16,880 --> 00:38:20,960
And remember don't try this kind of boom in your own lagoon

435
00:38:21,600 --> 00:38:23,320
fire in the hole

436
00:38:23,320 --> 00:38:25,120
fire in the hole

437
00:38:25,120 --> 00:38:27,120
fire in the hole

438
00:38:27,120 --> 00:38:28,960
Take it away

439
00:38:28,960 --> 00:38:30,960
50 pounds of Ampho

440
00:38:32,360 --> 00:38:36,280
In three two one

441
00:38:37,160 --> 00:38:39,160
Bye-bye

442
00:38:44,960 --> 00:38:52,360
Whoops 50 pounds of Ampho almost obliterated the rig entirely it suddenly become a recovery mission a

443
00:38:55,280 --> 00:39:01,240
Recovery mission indeed, but what has the 4,000 feet per second shockwave done to the burst discs?

444
00:39:02,560 --> 00:39:04,320
Okay, oh

445
00:39:04,320 --> 00:39:09,840
It's burst it's clean through really yeah, well god. I wonder what it's gonna look like underneath

446
00:39:10,080 --> 00:39:16,920
Yeah, that's the big question so at 50 feet above water the furthest distance from the explosion the discs are burst

447
00:39:17,520 --> 00:39:19,520
but underwater

448
00:39:19,960 --> 00:39:22,240
Well first discs are burst

449
00:39:23,360 --> 00:39:24,760
Wow

450
00:39:24,760 --> 00:39:27,440
50 pounds of Ampho burst every single

451
00:39:28,240 --> 00:39:33,360
But that huge blast is making it difficult for the guys to call this one just yet

452
00:39:33,760 --> 00:39:37,880
Not really the definitive result. We're looking for I'm hoping for more from dynamite

453
00:39:38,960 --> 00:39:46,480
That's right the mythbusters have one more explosive for bomb disposal this time around we're using 50 pounds of dynamite

454
00:39:46,480 --> 00:39:54,640
That's 25 of these things now dynamite is a high explosive that creates a pressure wave that moves at 9,000 feet per second in air

455
00:39:55,000 --> 00:39:57,000
ready for a detonation

456
00:39:57,520 --> 00:40:00,920
Look at it go our little tetrahedron of death

457
00:40:03,840 --> 00:40:06,120
Yep, it's all down to that little tetrahedron

458
00:40:06,880 --> 00:40:09,880
The gas explosion showed you'd be better off underwater

459
00:40:10,320 --> 00:40:16,080
Whereas the Ampho detonation was total devastation above or below the surface

460
00:40:16,280 --> 00:40:19,880
So now it's all down to the dynamite decider

461
00:40:20,800 --> 00:40:23,200
Fire in the hole! Fire in the hole!

462
00:40:24,000 --> 00:40:26,000
Fire in the hole!

463
00:40:26,240 --> 00:40:34,280
All right, I'm gonna do it 50 pounds of dynamite and three two one

464
00:40:39,680 --> 00:40:41,680
Oh, yeah

465
00:40:43,680 --> 00:40:45,680
That was more than the Ampho

466
00:40:45,840 --> 00:40:49,360
The dynamite explosion was well dynamite

467
00:40:50,360 --> 00:40:52,360
I can only see one of our things left

468
00:40:53,240 --> 00:40:55,240
Yeah, salvage operation

469
00:40:56,520 --> 00:40:58,520
The

470
00:41:01,720 --> 00:41:08,320
Rig has clearly been decimated by the dynamite, but will the underwater burst discs have suffered the same fate?

471
00:41:12,320 --> 00:41:14,840
It's a hilarious horror show down here

472
00:41:16,400 --> 00:41:21,760
The five, the ten and the twenty foot water are all huddled together

473
00:41:21,920 --> 00:41:31,800
They are still attached to the rope but every single burst disc on all three of them is completely blown over

474
00:41:32,720 --> 00:41:34,720
Well, I'll be darned

475
00:41:35,320 --> 00:41:43,640
Underwater at five ten and twenty feet the discs are broken a pattern mirrored above water, but how about the 50-footer?

476
00:41:44,560 --> 00:41:47,840
Well, that's clean through above water. It's burst

477
00:41:48,800 --> 00:41:50,400
however

478
00:41:50,480 --> 00:41:57,520
You're gonna love this Jamie the 50 foot mask and put down the burst disc is intact

479
00:41:58,760 --> 00:42:04,280
Well, that says something really strong about the myth. That's great. What about the five footer?

480
00:42:06,520 --> 00:42:10,760
Also intact repeat the five footer is also intact

481
00:42:11,560 --> 00:42:17,800
What happened at this 50 foot marker is really interesting

482
00:42:18,640 --> 00:42:25,080
Because we have a blown disc above water, but we have intact discs below water

483
00:42:25,400 --> 00:42:31,800
So that's a bombshell result just like the gasoline explosion when it comes to a dynamite bomb

484
00:42:32,320 --> 00:42:35,000
Diving under water would make a difference

485
00:42:36,040 --> 00:42:38,040
Explosives are funny creatures

486
00:42:38,160 --> 00:42:43,280
Broke our rope and decimated two out of our core mass the dynamite did not break our rope

487
00:42:43,440 --> 00:42:45,880
But decimated three out of the four

488
00:42:46,560 --> 00:42:50,680
However, it burst all of the in-air burst discs

489
00:42:50,800 --> 00:42:56,600
But not the two underwater burst sticks on the 50 that is the kind of result that I was hoping for

490
00:42:56,600 --> 00:43:01,080
That tells me that there really might be something for the myth am I gonna use one of the three magic words?

491
00:43:01,080 --> 00:43:03,080
No, not until I'm with Jamie at the very end

492
00:43:03,760 --> 00:43:10,840
So where do we stand well in a situation like this?

493
00:43:14,680 --> 00:43:20,640
It's plausible that the water would protect you from an explosion plausible it is let's get out of here, okay